请选择ABCD:m-U6U3s;y "Practice in pairs." means______.,p6S'I3n9@2n;W
A.两人练习,p6S'I3n9@2n;W
B.两人表演,p6S'I3n9@2n;W
C.组成小组,p6S'I3n9@2n;W
D.三人游戏,p6S'I3n9@2n;W